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#### Axial and Radial Options

When you create either a Circular or Total Runout FCF dimension, the Axial and Radial options appear in the Feature Control Frame options area on the Feature Control Frame tab in the XactMeasure GD&T dialog box (Insert | Dimension | <dimension>). These identify the type of runout. In some cases, the input feature or features automatically determine which of these two options is selected:

- Axial - The runout is measured on the end surface of a cylindrical part.

- Radial - The runout is measured on the cylindrical surface of a bore or shaft.

For a Circular Runout with a circle feature as an input, this area also displays a surface type list with two options: Conical and Cylindrical.

Feature Control Frame options area for a Circular Runout with Cone selected from the list and a Cone angle box

This list defines the surface type for the circle feature. If it's on a cylinder, select Cylindrical. If it's on a cone, select Conical.

If you select Conical, the Half Cone angle box appears so that you can define the cone angle to use in the runout calculation. PC-DMIS calculates the runout of a circle measured on the surface of a cone perpendicular to the cone surface. It does this by multiplying the cylindrical result by COS (Half Cone Angle).

For more information on FCF Runout, see the "Creating a Runout Feature Control Frame Dimension" topic.